Use of circular saw blades on a table saw - Page 3 - Router Forums
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post #21 of 31 (permalink) Old 01-23-2019, 07:56 PM
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Actually, the circular saw blade spins faster, thinner kerf, and is less difficult for the motor to spin. Less strain on the table saw lengthens life.
Both blades spin at the same speed, whatever the motor turns at. Rim speed is higher on a larger blade. 91,100 inches per minute on a 7 1/4" blade at 4000 rpm as opposed to 125, 660 inches per minute for a 10" blade at the same rpm. Torque on the arbor and motor is reduced to 72.5% by using the smaller blade.
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post #22 of 31 (permalink) Old 01-24-2019, 01:01 AM
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Actually, the circular saw blade spins faster, thinner kerf, and is less difficult for the motor to spin. Less strain on the table saw lengthens life.
don't agree w/ that at all...
it appears you had made up your mind even before you asked your question....
carry on w/o me please..
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post #23 of 31 (permalink) Old 01-24-2019, 03:23 AM
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Actually, the circular saw blade spins faster, thinner kerf, and is less difficult for the motor to spin. Less strain on the table saw lengthens life.
just wondering how it spins faster are you changing the gearing of the saw ? it will spin at the same speed and any other blade used in the saw.
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post #24 of 31 (permalink) Old 01-24-2019, 07:15 AM Thread Starter
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just wondering how it spins faster are you changing the gearing of the saw ? it will spin at the same speed and any other blade used in the saw.
You are correct. What I should have said is it will make more RPMs being a smaller diameter.

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post #25 of 31 (permalink) Old 01-24-2019, 07:19 AM Thread Starter
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don't agree w/ that at all...
it appears you had made up your mind even before you asked your question....
carry on w/o me please..
Perhaps your laws of physics and mechanics are different.

My mind wasn't made up. That's the reason I asked. It's still not made up.

I wanted reasoned advice. But saying it's akin to base jumping and a can of worms didn't add a thing.

I'll happily carry on without you.

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post #26 of 31 (permalink) Old 01-24-2019, 08:43 AM
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Steve...perhaps you should read the thread again from the top...

You were provided reasoned advice...you were advised that the rim speed would be slower and that has certain consequences, that you would need to be careful with certain species of wood so as not to burn, that you need to consider the hook angle of the circ saw so as not to damage your cut, that you need to consider what to do with the riving knife as the circ saw blade was much thinner (a dangerous position to be in on longer rip operations) amongst many other items you were advised to consider.

Your response was to present additional youtube video in support of a position. Kindly note that Colin's video also warns of some of the things that were presented to you.

You were also asked to describe what you had in mind...the intent of which was to understand better and provide you with more precise response. You never answered that question.

You obviously twisted your knickers in a knot when an example was used to indicate "your mileage may vary" (base jumping). And it seems you did not acknowledge the response you received to the "can of worms" reference.

This forum, of which there is no equal, is made up of members that uniquely and happily provide help to those that need it. New woodworkers ask questions and differing advice is provided based on individual and long time experiences. Some accept it face value, so reject it and others accept what is presented and make up their own minds. You will not find another forum with that attitude. New woodworkers accelerate their learning faster than if they apprenticed under a Master.

A different response from you could have been to discuss the points that were presented to you...based on what your intentions were, meaning, your intended application for using the circ saw blade.

Since there are so many ways to skin the same cat, experiences on this forum dictate that what a person accepts as advice is of no personal consequence to any of the respondents...they only present, and continue to assist, to those that want to learn. There are no "my way or the highway" attitudes on this forum...although you will find plenty of that on many of the other forums.

This is not intented to twist your knickers even tighter...only to have you consider that there are more sides to any situation.

Good luck...stick around...learn things...
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post #27 of 31 (permalink) Old 01-24-2019, 10:02 AM Thread Starter
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My knickers weren't in a twist and still aren't. But suggesting it's a can of worms as if it's a pronouncement on high without giving reasons, and when those reasons that were given were wrong, isn't instructive.

My applications for possibly using a circular saw blade weren't given as I wasn't sure of the applications as of yet. I was looking for reasoned advice of which I was given some by others.

It's similar to when someone asks a question about a certain table saw, router, or any power tool and the answer is "Go big or go home!" That too, doesn't help.

I realize there's much knowledge available here, but I want thoughtful reasoned answers. Not dismissal as if I questioned the wizard behind the curtain.

I've learned much here and hope to continue to do so.

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post #28 of 31 (permalink) Old 01-24-2019, 10:43 AM
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You are correct. What I should have said is it will make more RPMs being a smaller diameter.
You are confusing angular velocity with instantaneous velocity. The angular velocity is the rpm of the blade. This is the same for both the large and small blade. The instantaneous velocity is the velocity at the tip of blade which is a function of the radius of the blade. ν =rω (v = velocity, r = radius, ω = angular velocity)

I have only been a member of this forum for a little over three years, but I have found that the advice that is provided is typically sincere and well thought out. There is an unbelievable amount of experience on this forum and the members are more than willing to freely share that knowledge. If you ask for their opinion, either accept it or ask questions for clarification. By presenting alternate opinions to support your viewpoint is akin to telling them that their opinion is wrong. This may or may not be true, but it surely isn't the way to motivate them to further help you. You just need to take the opinions that you asked for and then make up your mind as to whether or not you accept them. Like Nick said, stick around and get to know the members and have fun!
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post #29 of 31 (permalink) Old 01-24-2019, 11:54 AM
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This might work for some, but my circular saw doesn't have the large diameter arbor that my table saw does, so it wouldn't be considered.

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post #30 of 31 (permalink) Old 01-25-2019, 08:24 AM
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I don't know if using a smaller diameter blade is a good idea or not. However, I'm gonna try it. My saw is capable of varying speeds so, speed might not be a limiting factor. My favorite blade is Tenryu and, they offer a vast selection of tooth configurations. I'll bet I can find one to suit the job.
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